progress: set defaultWidth if no width can be found

This commit fixes a bug in the progress rendering when no terminal
width can be identified. In this case pb.ProgressBar will strip
bars with dynamic elements. This is undesirable so when no size
can be found we just use the pb.defaultBarWidth (which is not
exported sadly). This should get fixed upstream ideally.

bib/internal/progress/progress.go

@@ -111,12 +111,17 @@ func (b *terminalProgressBar) SetProgress(subLevel int, msg string, done int, to
 	switch {
 	case subLevel == len(b.subLevelPbs):
 		apb := pb.New(0)
-		b.subLevelPbs = append(b.subLevelPbs, apb)
 		progressBarTmpl := `[{{ counters . }}] {{ string . "prefix" }} {{ bar .}} {{ percent . }}`
 		apb.SetTemplateString(progressBarTmpl)
 		if err := apb.Err(); err != nil {
 			return fmt.Errorf("error setting the progressbarTemplat: %w", err)
 		}
+		// workaround bug when running tests in tmt
+		if apb.Width() == 0 {
+			// this is pb.defaultBarWidth
+			apb.SetWidth(100)
+		}
+		b.subLevelPbs = append(b.subLevelPbs, apb)
 	case subLevel > len(b.subLevelPbs):
 		return fmt.Errorf("sublevel added out of order, have %v sublevels but want level %v", len(b.subLevelPbs), subLevel)
 	}